'Revertoscutum!" said Jenny. A huge blue-green shield appeared. Strangely enough, it then just disappeared. Like water evaporating. She repeated the spell, and it was blue like she hoped. It stayed there for about a minute, then she let it go. She wrote down in her notes, with the ink that smelled like chocolate, and the spell-check quill:
Revertoscutum makes blue shield appear from wand. She loved the smell.